Everyday Science

Science in Nature

Here we address to reasoning questions arising in the minds of children on the basis of their day to day observations by giving their scientific answers. Some questions which children asked over the years regarding science in nature are given below.

Why does ice float on Water

Before we talk about the reason of floating of ice on the water, first, let's take a look at why anything floats. We know that a substance floats in a liquid if its density i.e. mass per unit volume is less than the density of the liquid.

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Is it possible to make fire from ice? If yes, how?

Thinking of making fire from ice is very weird. But it is possible. Do you know how?

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Why does a piece of blue glass emit yellow light on heating?

Blue glass absorbs red and green light where as transmits and reflects blue light. According to Kirchhoff’s law of radiations a body emits best the same colours on heating which it absorbs best at low temperatures.

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Why a Camel is called the ship of desert?

A camel is called the ship of desert, because, it is the most suitable carrier to cross a desert. Its flat, wide, cushany paws do not sink in the sand, in each step it covers a comparatively longer distance and saves energy as it moves in a balanced manner.

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Why do leaves change colour during autumn?

Normally we see that the colour of leaves is green. The colour of leaves is due to the presence of different pigments produced by the plants. Mainly there are three types of pigments responsible for colours of leafs. They are porphyrins, carotenoids and flavourids.

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Red coloured object appears black in blue colour light, why then a black colour object appears black in light of any colour?

The optic nerves in the retina of eye detect only three colours: Red, green and blue. These colours are called primary colours. A red coloured object absorbs green and blue colours and diffuses only red colour light out of the white light falling on it, that is why it appears red.

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 Vigyan Apke Liye  

Vigyan Aapke Liye (Science For You)  is a popular science magzine in Hindi. It is aimed at cultivating science temprament and attitude among the people particularly the children.

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Do You Know
In your lifetime, you'll shed over 40 pounds of skin.
 
 

Thought
of
the Day
 
It is the man of science, eager to have his every opinion regenerated, his every idea rationalized, by drinking at the fountain of fact, and devoting all the energies of his life to the cult of truth, not as he understands it, but as he does not yet understand it, that ought properly to be called a philosopher.
Charles Peirce
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